reverse gear not working in automatic transmission

If you accelerate gently, shifts will occur at lower speeds than if you accelerate at full throttle.

If the car is in overdrive (on a four-speed transmission), the transmission will automatically select the gear based on vehicle speed and throttle pedal position.

They are actuated by hydraulic cylinders inside the case of the transmission. The bands in a transmission are, literally, steel bands that wrap around sections of the gear train and connect to the housing. In this transmission there are two bands.

Each gear shift triggers a series of events like these, with different clutches and bands engaging and disengaging. The big sun gear is held to the housing by a band so that it could not rotate. The small sun gets disconnected from the turbine by a clutch so that it can freewheel. The planet carrier gets connected to the torque converter housing by a clutch. To get the transmission into overdrive, lots of things have to be connected and disconnected by clutches and bands. Nothing is connected to the turbine the only input comes from the converter housing. The small sun gear freewheels, and the larger sun gear is held by the overdrive band. In this transmission, when overdrive is engaged, a shaft that is attached to the housing of the torque converter (which is bolted to the flywheel of the engine) is connected by clutch to the planet carrier. For instance, when we discussed overdrive, we said: In the last section, we discussed how each of the gear ratios is created by the transmission. Let's take a look at how the planetary gearset works. The planetary gearset is the device that makes this possible in an automatic transmission. The key difference between a manual and an automatic transmission is that the manual transmission locks and unlocks different sets of gears to the output shaft to achieve the various gear ratios, while in an automatic transmission, the same set of gears produces all of the different gear ratios. In order to protect the transmission from serious damage, drivers who tow should buy vehicles equipped with transmission coolers. When towing or hauling heavy objects, your vehicle's transmission can get hot enough to burn up the transmission fluid. So the transmission uses gears to make more effective use of the engine's torque, and to keep the engine operating at an appropriate speed.

A car like this would wear out very quickly and would be nearly undriveable. If you did, you'd quickly find out that you had almost no acceleration when starting out, and at high speeds, the engine would be screaming along near the red-line. You've probably never tried driving a manual transmission car using only third gear.

Reverse gear not working in automatic transmission